Offset perfecting-press.



D. J. SCOTT.

OFFSET PERFECTING PRESS.

APPLICATION FILED SEPT. 29. I916.

Patented Oct. 22, 1918.

2 SHEETSSHEET l mswmo D. J. SCOTT.

OFFSET PERFECTING PRESS.

APPLICATION FILED SEPT. 29, I9! 6. 1,282,6%2 Patented. 0015. 22, 1918.

2 SHEETS-SHEET 2.

eeacaa. Original application filed April 2, 1915, Serial No. 18,639. Divided and this application filed September 29,

DAVID JOHN SCOTT, OF PLAIN FIELD, NEW JERSEY, ASSIGNOR TO ISABELLA SCOTT AND DAVID J. SCOTT, EXECUTORS OF THE ESTATE OF WALTER SCOTT, DECEASED.

OFFSET PERFECTING-PRESS.

Specification of Letters Patent.

Patented Oct. 22, 191%.

1916. Serial No. 122,835.

To all whom it may concern:

Be it known that I, DAVID J. Sco'r'r,

of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Offset Per fecting-Presses, of which the following is a specification. a

The present invention relates generally to offset perfecting presses and has more particularly reference to the general arrangement of the printing units and elements composing the same.

The present application is a division of one filedon April 2, 1915, Serial No. 18,639 and has for its main object the production of a machine in which both sides of the sheet are printed by the offset process and without the omission of elements necessary to pro duce high class results; and in which the arrangement of cylinders is such that all the working parts will be completely accessible. Another object of the invention is to provide means for conveniently controlling the various instrumentalities that make up the press.

Accordingly, the invention consists in the features of construction, combination of parts and arrangement of elements disclosed in several preferred forms in the accom panying drawings. However, changes may be made in the particular forms disclosed herein without departing from the legitimate and intended scope of the invention.

In the drawings:

Figure 1 is a side elevation,-large1y in diagrammatic form, showing a sheet fed press embodying the invention. v

Fig. 2 is a side elevation in diagrammatic form, of a modification of the invention.

Similar characters of reference indicate corresponding parts .in the several views.

The machine consists of two units, one unit comprising the impression cylinder E, the transfer or blanket cylinder C and the formcarrying cylinder A, the other unit comprising the'impression cylinder F, the

transfer or blanket cylinder D and the form? carrying cylinder B. The form-carrying and transfer cylinders of each unit are arranged one above the other in such manner as to form an exposed operating side for the machine, and the units are so grouped that h xposed operating si e is outermost.

a' citizen of the United States, anda resident \contact with each other.

ployed. In the The impression cylinders of the two units are located innermost of the machine and in In one unit. the form-carrying cylinder A is at the upper end of the unit and the impression cylinder E at the lower end of the unit, while in the other unit the form-carrying cylinder is at the lower end of the unit and the impression cylinder F is at 7 .unit.

the upper end of the I of supply of paper I, shown in Fig.1 as a p1le of paper and in Fig. 2 as a roll of paper.

- In Fig. 1, the sheets are fed over the feedboard J to the first impression cylinder E, and then to 'the second impression cylinder F, while in Fig. 2 the web is carried to the cutting cylinders M, which may be of the form known as all size rotary cutters, and thence over the sheet path M to feeding cylinder M after which the paper passes to the first impression cylinder E and then to the second impression cylinder F.

A delivery mechanism is located under one unit and substantially below both impression cylinders and adjacent to the inner side of theother unit. In the form shown in F ig. 1, this delivery is shown as a fiat delivery K, while in Fig. 2 the delivery consists of the folding cylinders M and M which in turn deposit the folded sheets on the rotary delivery L which feeds them to apron L. A gang-way or platform G is in bothinstances located on the outside of th delivery.

innder; or, to state it differently, the antisnmtting device is located substantially under the two impression cylinders and'is in contact with the second impression cylinder.

Suitable means are provided for separating the cylinders so as to render them accessible. The two transfer or blanket cylinders C and D are mounted in sliding boxes 54 in a well-known manner and are so arranged that when the throw-off mechanism is connected by handles 39 and 37, they will be moved outwardly of the exposed operating sides of the machine and away from their companion cylinders. Suitable means are also provided for separating the two impression cylinders by mounting one or both of them in similar sliding boxes 54 controlled from the handles 14. If desired several cylinders may be tripped or thrown off in unison. Thus in Fig. 1 a connecting rod 120, disconnectible by means of hook 36, connects handles 39 and 37 of the two transfer cylinders.

The dampening mechanisms N, if employed, may be withdrawn by means of handle 34 so as to bringthem out of contact with the form-carrying cylinders. Similarly the anti-smutting device 37 may be movedout of contact with impression cylinder F by means of operating handle 50.

What is claimed, is:

1. A rotary offset perfecting machine comprising: two units printing from positive forms on opposite sides of impression receiving material, each unit consisting of a formcarrying, a transfer and an impresslon cylinder, the form-carrying and transfer cylinders of one unit bein arranged in a vertical column with the form-carrying cylinder uppermost and the impression cylinder being arranged out of line with the other cylinders and lowermost to form an exposed operating side for the unit, the form-carry ing and tranfer cylinders of the other unit being arranged in a vertical column with the form-carrying cylinder lowermost and the impression cylinder being arranged out of line with the other cylinders and uppermost to form an exposed operating side, the units being grouped with their operating sides outermost and with the impression cylinders adjacent each other.

2. A rotary ofiset perfecting machine comprising: two units printing from positive der bein ing and transfer cylinders of the other unit being arranged in a vertical column with the form-carrying cylinder lowermost and the impression cylinder being arranged out of line with the other cylinders and uppermost to form an exposed operating side, the units being grouped with their operating sides outermost and with the impression cylinders adjacent each other, and means for throwing the transfer cylinders outwardly with respect to the operating sides of the machine.

3. A rotary offset perfecting machine comprising: two units printing from positive forms on opposite sides of impression receiving material, each unit consisting of a form-carrying, a transfer and an impression cylinder, the form-carrying and transfer cylinders of one unit being arranged in a vertical column with the form-carrying cylinder uppermost and the impression cyhnarranged out of line with the other cyllnders and lowermost to form an exposed operating side for the unit, the form-carrying and transfer cylinders of the other unit being arranged in a vertical column with the form-carrying cylinder lowermost and the impression cylinder being arranged out of line With the other cylinders and uppermost to form an exposed operating side, the units being grouped with their operating sides outermost and with the impression cylinders adjacent each other, a feeding cylinder arranged adjacent to the impression cylinder of one unit, and a delivery cylinder adjacent to the impression cylinder of the other unit.

Signed at Plainfield, in the county of Union and State of New Jersey, this 27 day of September, A. D. 1916.

DAVID JOHN SCOTT.

Witnesses: CARL E. DRANGE, J. V. Cows. 

